1 /* 2 * Copyright 2002-2006 the original author or authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.springframework.webflow.engine; 17 18 import org.springframework.webflow.execution.RequestContext; 19 20 /** 21 * Strategy interface encapsulating criteria that determine whether 22 * or not a transition should execute given a flow execution request context. 23 * 24 * @see org.springframework.webflow.engine.Transition 25 * @see org.springframework.webflow.execution.RequestContext 26 * 27 * @author Keith Donald 28 * @author Erwin Vervaet 29 */ 30 public interface TransitionCriteria { 31 32 /** 33 * Check if the transition should fire based on the given flow execution 34 * request context. 35 * @param context the flow execution request context 36 * @return true if the transition should fire, false otherwise 37 */ 38 public boolean test(RequestContext context); 39 40 }